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Keywords:

  • Mediterranean;
  • 16th century;
  • whole moulding;
  • ship design;
  • narrowing;
  • rising

Methods of designing the bottom of ship's hulls were only a small part of the process of building a frame-based ship in Portugal in the 16th and early 17th centuries, but they deserve a careful look. Using a number of geometric algorithms that were already well-known to Italian shipwrights of the 15th century, Portuguese shipwrights obtained the co-ordinates of the turn of the bilge points of the central, pre-designed, frames without the need for making drawings.

© 2006 The Author